I'm intersted in getting the FA4, but i have heard when going to the next song you can hear crackling and clicking sound. Is this fixed or not? because i had a usb dac with the same problem and it made me insane, i had to return it. I've been reading discussions about the FA4 and people mentioned if you have more than 3000 songs you start having problems, is this true? the hardware is very good for the price but i see a lot of software issues. Also, i noticed the firmware you posted is v8.1, and while i was searching i found a v9.2, is there a reason to use older versions?